Hornqvist stretched the lead to 3-0 on a power play, and Sweden underlined its control when Mattias Janmark made it 4-0 just 11 seconds later.

Arvidsson added his second into an empty net in the final period, and Adrian Kempe finished it off with the sixth. Sweden earned its ninth win from nine games in this championship.

The U.S. pressured in the opening period, outshooting Sweden 16-8 and 41-19 overall. But it was the Swedes who went ahead. Arvidsson knocked in a loose puck in the crease following a shot from above the right circle by Filip Forsberg.

U.S. captain Patrick Kane, the overall scoring leader, failed to register a point for the first time in the championship.

"We just made too many mistakes and they capitalized," Kane said. "They've got a lot of good players over there and made us pay for those mistakes.

"It's gonna be tough to regroup (for the bronze medal game) ... but we have to do it."